Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8167316 | Clamping head provided with floating clamping jaws A clamping device for fixing a machined part to a processing axis in a machine tool including the processing axis, a clamping head which is rotatable thereabout and with clamping elements floatably arranged thereon. ... | 05/01/2012 |
| 7954825 | Quick-release jaws with single-piece bearing chuck A workholding chuck can use actuating members that pivot within a non-split unitary front bearing. The non-split unitary front bearing can include pockets in its central bore that can allow a spherical section of an actuator arm to be inserted into the bearing. The ... | 06/07/2011 |
| 7516964 | Clamping chuck and key rod therefor A clamping chuck for machine tools comprising a chuck body and a plurality of clamping jaws which can be displaced together radially by means of a drive comprising key rods is disclosed. An actuating mechanism comprising a releasing bolt is rotatably positioned in t... | 04/14/2009 |
| 7347470 | Mechanism for securing a grab handle to an armrest An armrest assembly secured to a substrate comprising an armrest having a cavity and at least one tee lock, a grab handle having a least one side wing, and wherein the grab handle is secured to the cavity of the armrest by operatively engaging the at least tee lock ... | 03/25/2008 |
| 7134635 | Rail mounting system for thin clients A mounting system for a device encasement, including an elongated, T-shaped tenon rail, the T-shaped tenon rail being affixed to the device encasement. One or more detachable mounts may be detachably affixed to the T-shaped tenon rail. The T-shaped tenon rail is per... | 11/14/2006 |
| 7090085 | Trophy sports apparatus holder The trophy item holder is a holder which associates the trophy item with a descriptive card which provides information on the item and its user. Photographs or a certificate of authenticity may also be displayed. Thus the information establishing the item as a troph... | 08/15/2006 |
| 7021705 | Children's chair A child safety, folding seat includes support members pivotally joined to a seat member. The seat member pivots between folded and unfolded conditions, and a lock locks the seat in the unfolded condition when the seat members is unfolded. Preferably, the lock is spa... | 04/04/2006 |
| 6880831 | Power-actuated lathe chuck A chuck has a chuck body rotatable about a chuck axis, a plurality of holders angularly spaced about and radially displaceable on the body and each formed with an outwardly flared seat centered on a respective seat axis, and an actuator for radially displacing the h... | 04/19/2005 |
| 6491305 | Chuck and gripping claws for chuck A chuck comprises: a chuck body attached to a spindle of a machine tool; master jaws attached to the chuck body along the normal of the chuck body and formed with T-shaped grooves extending along the length thereof; T nuts having tops and trunks, the tops... | 12/10/2002 |
| 6485032 | Lever-type lathe chuck with replaceable jaw inserts A chuck has a chuck body adapted to be rotated about a chuck axis and a plurality of elongated jaw arms angularly spaced about the axis, pivotal in the chuck body about respective guide axes extending secantally of the chuck axis, and axially slidable in ... | 11/26/2002 |
| 6264210 | Quick-change jaw chuck system A jaw assembly for a jaw chuck for holding a workpiece to the spindle of a machine, such as a lathe, includes an intermediate coupling member that engages a master jaw slot formed in a master jaw which is disposed in a radial guide formed in the body of t... | 07/24/2001 |
| 6241261 | Chuck In a chuck (1) with moveable base jaws (11) inserted in radial grooves (3) in a chuck body (2) with each base jaw (11) having a releasable top jaw (21) attached to it, a joining piece (12) protruding towards the top jaw (21) is formed onto each base jaw (... | 06/05/2001 |
| 6145850 | Diaphragm chuck In a diaphragm chuck (3) with clamping jaws (3) which are in a drivable connection with a deformable diaphragm (4) by means of jaw carriers (6) and in which counterweights (8) allocated to the clamping jaws (3) are inserted in the chuck body (2), the clam... | 11/14/2000 |
| 5899464 | Jaw assembly for holding a workpiece A quick-change jaw assembly for use in machining operations. The assembly includes a top jaw which may be removed from a chuck and thereafter repositioned on the same or a different chuck without losing the accuracy previously established through machinin... | 05/04/1999 |
| 5845912 | Adjustable quick change jaw apparatus An adjustable quick change chuck jaw apparatus for attachment to a master jaw in the front face of a rotary chuck allows a machinist to quickly change the chuck jaws from one diameter to another. A generally rectangular jaw body is connected to the master... | 12/08/1998 |
| 5842704 | Chuck jaw and quick change jaw inserts A chuck jaw assembly for securing work material upon a machine tool, the assembly includes a jaw and replaceable inserts. The jaw provides a mounting means allowing jaw inserts to be quickly replaced by removing one screw, furthermore inserts are provided... | 12/01/1998 |
| 5842705 | Quick-change jaw assembly A rotary chuck having a plurality of quick change jaw assemblies each including a master jaw carried by the chuck body and a top jaw releasably secured to the master jaw by a single retaining fastener having a shank including a frustoconical portion. A re... | 12/01/1998 |
| 5735534 | Easily replaceable top jaw for a chuck A top jaw assembly for mounting upon the master jaw of a chuck for a lathe includes a mounting base and a top jaw. The mounting base contains two bores which facilitate securement to the master jaw, and a threaded hole. The top jaw is secured to the mount... | 04/07/1998 |
| 5664793 | Quick-change chuck jaws A chuck jaw assembly includes a base and a removable jaw. A tongue and groove interconnection is provided between the base and the jaw in the form of a longitudinally tapering dovetail. As the tongue is pushed along the groove, its sides are tightly wedge... | 09/09/1997 |
| 5529320 | Quick change top jaw A top jaw for attachment to a master jaw slidable radially in a front face of a rotary chuck toward and away from a central rotational axis of the chuck, the top jaw being suitable for alternate gripping of the inside and outside periphery of a tubular wo... | 06/25/1996 |
| 5524910 | Independent chuck jaw insert having a registration surface enabling locking at a specific position An independent jaw insert locks in a fixed location. Using a post, the post has a flat extending to a transverse groove. An inserted rod locks the post. In addition, a set screw having a point lands in a dimple on the post; two such set screws apply a pin... | 06/11/1996 |
| 5464232 | Locking tool holder apparatus A locking jaw assembly having a workpiece clamping top jaw securely interconnectable to a master jaw by a key locator and a lock bolt wherein the top jaw may be readily removed from the master jaw by simply loosening the lock bolt and another top jaw may ... | 11/07/1995 |
| 5330205 | Power chuck with quick change top jaw A jaw carrier arrangement is provided with a main jaw carrier which removably mounts a top jaw. The jaw carrier has a bore opening outwardly through a front face for receiving a rear support post provided on the top jaw. A clamping structure is provided o... | 07/19/1994 |
| 5322305 | Power chuck A power chuck includes a body, a plurality of work engaging jaws, a plurality of rocker arms carrying the jaws, and plurality of swivel mountings connecting the rocker arms to the body. The power chuck also includes a plurality of slide members connected ... | 06/21/1994 |
| 5190300 | Top jaw and wedge connector A top jaw system for securing a top jaw in position above a chuck on a milling machine, lathe or the like is provided. The system generally includes a base jaw, top jaw, master jaw, and a conventional jaw nut. The base jaw includes a bottom portion and a ... | 03/02/1993 |
| 5184833 | Power chuck A power chuck includes a body, a plurality of work engaging jaws, a plurality of rocker arms carrying the jaws, and a plurality of swivel mountings connecting the rocker arms to the body. The power chuck also includes a plurality of slide members connecte... | 02/09/1993 |
| 5174589 | Clamping device A chuck with radially adjustable base jaws and exchangeable clamping jaws is provided. The toothings of the base jaws intermesh with respective toothings of the clamping jaws. The base jaws and the clamping jaws are coupled by respective keys which are ad... | 12/29/1992 |
| 5163693 | Top jaw and wedge connector A top jaw system for securing a top jaw in position above a chuck on a milling machine, lathe or the like is provided. A protrusion extends upward from the chuck and is preferably attached to the chuck by rigid attachment to a jaw nut which is positioned ... | 11/17/1992 |
| 5158307 | Chuck for machine tools A machine tool chuck in which a wedge member is provided to cause radial displacement of workpiece clamping pawls for replacement. The replacement can be made with minimum variations in radial position at which the clamping pawls are relocated. To this en... | 10/27/1992 |
| 5139277 | Rapidly convertible chuck adapters A chuck having a sliding outer jaw is locked against any adjustment in radial position relative to the inner jaw on which it is moved radially by a radially movable pin which, in one radial position, prevents axial retraction of the post interconnecting i... | 08/18/1992 |
| 5129662 | Chuck A chuck having at least one jaw assembly that is radially displaceably guided in a chuck body and comprises a driving jaw and a clamping jaw. A coupling member is mounted in the driving jaw in such a way as to be displaceable at right angles to guides pro... | 07/14/1992 |
| 5076596 | Top jaw and wedge connector A top jaw system for securing a top jaw in position above a chuck on a milling machine, lathe or the like is provided. A protrusion extends upward from the chuck and is preferably attached to the chuck by rigid attachment to a jaw nut which is positioned ... | 12/31/1991 |
| 5015003 | Top jaw assembly with replaceable work holding pads A top jaw assembly is adapted to be mounted on the master jaw of a chuck and includes a replaceable work holding pad. The top jaw assembly includes a top jaw formed with a first support surface lying in an axial plane and a second support surface bored co... | 05/14/1991 |
| 4971340 | Collet The collect (20) is composed of a foundation body (21) and a closer (22). The foundation body (21) can be connected to the tightening device of a machine tool. The closer (22) is divided into individual clamping jaws (38) which are connected to one anothe... | 11/20/1990 |
| 4763906 | System for the rapid change of clamping jaws on a machine tool A quick clamping jaw change system comprises a blocking element on which a jaw is to be mounted. The blocking element carries a spring-biased pusher having an inclined pusher face which pushes against the jaw to displace the jaw against an inclined bearin... | 08/16/1988 |
| 4725065 | Device for the coupling of attachment chucking jaws to basic jaws of a chuck In a device for the coupling of attachment chucking jaws (31) to basic jaws (11) which are movably guided in a chuck body (2) of a chuck (1), the basic jaws each have an extension (21), projecting in an axial direction, with a collar (23) projecting inwar... | 02/16/1988 |
| 4722536 | Quick change chuck jaw A chuck for gripping a workpiece during a rotary operation includes a chuck body with a master jaw movably mounted on the chuck body. The master jaw includes a bayonet type locking structure. The master jaw also includes a face with at least one pin recip... | 02/02/1988 |
| 4200300 | Lathe chuck with removable jaws A chuck has a chuck body rotatable about an axis and formed with a plurality of angularly spaced radially extending inner guides and a plurality of angularly spaced and radially extending outer guides. An inner jaw part wholly received within the chuck bo... | 04/29/1980 |
| 4026566 | Power-driven wedge-activated chucks A chuck for lathes and other machine tools has a chuck body provided with axially shiftable wedging members to actuate the jaws, a rotatable guard ring prevents full axial withdrawal of these members from sockets in the jaws in one angular position of the... | 05/31/1977 |
